Apparatus for making yarn rugs and such like



March 16 1926.

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Patented Mar. 16, 1926. a

, UNITED; STATES rrr'riztrr OFFICE.

APPARATI TS FOR MAKING YARN BUGS AND SUCH LIKE.

Application filed August 17, 1925. Serial No. 50,684.

To all whom it may concern: I

Be it known that we, WILLIAM FnLToN and CHARLES VVILLBER, both British subjects, residing at Radcliffe and Pendleton, respectively, in the county of Lancaster, England, have invented certain new and useful Improvements in Apparatus for Making YarnRugs and such like, of which the following is a specification. 1

Thisinvention relates to apparatus for making yarn rugs and such like, wherein the yarn is inserted and looped or knotted into a foundation by means of a mechanism which measures and cuts a piece of yarn from a continuous supply, a plunger mechanism whichbends the piece into a loop, a mechanism which bends the loop and an attaching-needle mechanism which attaches the piece of yarn to the foundation by drawing the free ends of the loop through the foundation and the loop, and a mechanism which displaces the said mechanisms to operate on different parts of thefoundation. An example of an apparatus of this kind is disclosed in the specification belonging to Patent 1,544,895. I I

The'main object of our invention is to provide improved constructions of some of the said parts whereby'the speed of operation of the apparatus is considerably increased. Other objectsare to enable rugs with com- 'paratively short piles to'be produced and to facilitate timing of some of the mechanisms relative to the others.

With the above objects in view the invention resides in thecombination and arrangement of parts as hereinafter set forth, shown in the drawings, described and claimed, it being-understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure'l is a detached front view of a part of an apparatus for making yarn rugs or the like, and shows a carriage and the attaching needle and other yarn manipulating parts carried thereon.

Figure 2 is a detached side view in verl tical section showing the same carriage and parts carried thereon, and

Figure 3 is a detached planview of Fig- Figure 4'is a detached front View illustrating the knotting mechanism.

Figure 5 is adetached plan View, and

Figure 6 is a detached side view of Fig ure 4.

Figures 4 to 6 are drawn to a largerscale than the remaining figures.

Figure 7 is a detached plan view regarded from below of parts of the knotting mechanism shown in another position and illustrates the method of operation of the said mechanism.

Figure 8 is a detached front View in section of the carriage.

Figure 9 is a detached side view in section illustrating details of the positioning means. 7

Referring to the drawings, in the construction shown therein we arrange the gripper jaw 1 of the attaching needle 2 to oscillate about a horizontal axis 3 and correspondingly arrange the means employed to actuate the jaw 1. Above and in front of the attaching needle 2 we suspend a disc or plate 4 by means of a spindle 5 thereon, the

spindle5 being so mounted in a bracket 6 on the carriage 8 so that the disc or plate 4 is capable of oscillating about an axis which is somewhat inclined to the perpendicular and is also capable of an upward movement against the pressure of a spring 7 fixed to the carriage 8. The disc or plate 4 is provided with .a hole 9 passing through it in a substantially vertical direction and has two diametrically-arranged gaps 10 and 11 .in its periphery, the gap 10 being adjacent to the hole 9. I The disc has furthermore an annular groove 12 provided on its underside to receive the free end of a curved finger 13 fixed to a suitable part of the carriage 8,and the disc or plate 4 has also a .slot 14 on its underside extending into the base of the gap 10. Suitable means is provided for oscillating the said disc or plate at the required periods in the operation of the apparatus,one suitable means consisting in a pinion 15 on the spindle 5 meshing with a rack 16 sliding in guides 17 on the carriage 8 and connected by a link 18 and arm 19 to a spindle 20 provided with a crank pin 21 engaging a rotary positive cam 22 which is angularly adjustable relative to the rotary cam 23 employed to oscillate the yarn gripper 24 of the measuring mechanism.

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An adjustable collar 27 is provided on the spindle 5 and has two abutment surfaces 28 which co act with a stop pin 29 to definitely determine the limits of oscillation of the disc or plate.

The specification belonging to our Patent jlpildfitlo i'ully describes a method of operating the plunger iii, a method of feeding the yarn to the inserting mechanism by means of the yarn gripper 25, and a method of supporting and opening the hereinafter ret er-red to loo) by the device its the equiva. lent of these members being designated in the said SPOUlllCttlZlOll by the reference numerals 29, ll and 59 respectively.

In operation, the plunger 25 passes through the hole 9 and in doing it bends a piece of yarn into loop term and forces the loop through the hole. The free ends of the loop remain above the disc or plate at and the bent part oil the loop is supported and opened by the device 26 as heretofore. The plunger new recedes from the hole and the disc or plate 4% oscillates in th direction olf the arrow it), lrigure 5, the causing the hole 9 and the gap l0 adjac i thereto to pass the finger 13 which however catches the pieces of yarn and produces a bend therein between the bent part and the free ends of the piece. After the disc or plate 4.- has performed slightly more than a halt turn the movement ceases when the rap ll) re isters with the path of: the at taching needle L, and the yarn then lies in a position across the gap 10 and therefore across the path of the attaching needle 2. The needle now advances passes through the yarn loop and the foundation, opens its gripper jaw 1, and comes into position with the piece of yarn between it and its gripper jaw l, whereupon the jaw .l closes and the needle 2 recedes. This movement ot the needle 2 causes the piece of yarn to be drawn between the linger .13 and the t. 41 l: which thereby gives 'u an upward iron :urainst the action of the spring 7 'lhie movement also causes the free ends of the iiece o'l. yarn to be drawn through the hole ll in the d -1 through the toundatinn and through the loop. The disc l now use cillates baclr into its initial position, The

operations their meat tlicnr elrcs. lin- 'l't"gtill.tllli oil the h ill with the annular oore til prevent: e yarn from slipping past the needle ll. whilst the provision of the diamctrical groove ls: enables the gripper jaw l to open su'lliciently to ensure its passin above the piece of yarn preparatory to p ping the piece. "the gaps it: and it ensure ample clearance between the disc l and working parts of the attaching needle in all positions of the needle 2.

Figure 7 illustrates the term assumed by the piece of yarn alter the disc or plate lhas performed its operative movement, 75

being the piece of yarn, 76 the loop thereof and T7 the -lree ends thereof, whilst 78 indicates the foundation. The attaching needle is shown in this figure ready to perform its return movement after first passing through the loop 76, then through the two thicknesses of the foundation 78 and then lJOjt'Olltl that portion ot the piece of yarn 75 which by the movement of the disc or plate l in conjunction with the action of the linger 11% has been brought to lie across the gap .lt). In the shown position of the needle, its gripping jaw 1 is above the said part of the yarn whilst the complementary portion of the needle 2 is below the said part of the yarn which is thus gripped by the needle 2 and its jaw 1.

A yarn severing device comprising a inovable blade 31 is provided as heretofore to cut the piece of yarn after it has been nmasurcd iron: the continuous length by the sliding yarn gripper 2 t as heretofore. We however provide an independent positive cam 32 to operate a lever 33 :t'ulcrnnied at; 3:3, and connected by a link rod 36 to the movable blade 31. The lever 33 is also con nccted by a link rod 3%, a bell crank lever 37 and linl: rod 38 to an arm 39 provided on a shatt 1-0 mounted in fixed hearings on the carriage 3 and having an arm 4E1 connected by a link rod -12 to an oscillatable pawl 113 mounted on the carriage 8. The pawl ell-l is arranged to act on an arm oscillatably mounted on the slide which carries the yarn gripper ill and is connected to the movable part 46 of the gripper 24 by means 01 a link or connecting rod 47. Also the opening of the part 4:6 of the yarn gripper preparatory to grippin the yarn is also eilected through the arm ll and the link or rod 4-7 by nieans of a yielding catch ill mounted on the carriage t and adapted to yield in the direct-ion of the outward movement oil the slide l5. Thus the relative timing of the movable blade and part ltl are l'tll"'(f'tl constant and perinan -nt and the timing of these parts to the other mechanisms of the apparatus can be SyIlClItONOUSly adjusted relative to the other said mechanisms. Furthermore, the slide t5 and yarn gripper are relieved from strain and therefore operate more smoothly and without considerable wear.

ii yielding connection comprising a compression spring l8 arranged between a fixed collar el and a loose guide 50 may be introduced into the connection 36 between the iirst lever 33 and the movable blade 31 to enable the operator to opekate the blade 31 by hand independently of the apparatus when required.

All the above described parts are carried as lu-n'el'olore on the carriage 8 which hitcrniittently traversed by a pawl mechanism acting on a movable rack 51 having Sit Inn

rows 52 and 53 of ratchet teeth pointing in opposite directions. I 1 In the construction shownin the drawings, the pawls 54 and 55 are mounted on frame-like arms 56 and 57 connected to oscillatable shafts 58 and 59 'on the'carriage' 8 and having antifriction rollers 60 and 61 acted on by the usual cam plates 62 and 63 provided on the attaching needle slide 64. Two similar plungers 65 and 66 are mounted in guides 67 and 68 on the carriage 8 to reciprocate in'verticaldirections and the plungers 65 and 66 have their lower ends formed to engage the teeth of the rack 51, the plunger 65 being adapted to co-operate with theteeth of the row 53-and the plunger 66 with the teeth of the row 52. The plungers 65 and 66 are however so arranged that when the rack 51 is in one end position, the plunger 65 registers with the row 53 and the plunger 66 lies clear of the rack 51, whereas when the rack 51 is in its other end position, the plunger 66 registers with the row 52 and the plunger 65 lies clear of the rack 51. "The plungers65 and 66 are retained in inoperative positions by compression springs 69 and 7 O and are connected to rods 71 and 72 respectively provided, with an off-set end. Theend of the rod 71 is adapted to be acted on by an arm 73fixed to the shaft 58 whilst the end of the rod 72 is adapted to be acted on by an arm 74 fixed to the shaft 59. In operation the arms 56 and 57 are actuated to cause in known manner lateral displacement of the carriage 8 through the medium of one or other of the pawls 54 and 55 according to the position of the rack 51. The shafts 58 and 59 are thereby oscillated, and operate the plungers 65 and 66 by means of the arms 73 and 74, thus causing that plunger which registers at the moment with a row of teeth to engage a tooth of the said row and acts as a stop against the shoulder of the said tooth thereby preventing the carriage from over-running.

WVe claim- 7 1. In apparatus for making yarn rugs and such like provided with an attaching needle having an oscillatable gripper jaw and with plunger ,mechanism for looping the yarn, the combination of an actuated member movably mounted on the machine and an aperture in the said member to receive the loop formed by the plunger mechanism with a finger fixed to the apparatus and co-operating with the member to keep a part of the loop out of the path of the needle whilst the said member brings the free ends of the yarn into position across the path of the attaching needle for being gripped by the said needle.

2. In apparatus for making yarn rugs and such like provided with a yarn attaching needle having an oscillatable gripper theyarn into loop form,- the combination of a a memberoscillatably mounted on the ma chine and positively oscillated with a rela{ tively fixed finger on VtheImachine and an aperture in themovable member the path of which crosses the finger during oscillation of'the said member. V

3. Apparatus for making yarn rugs and such like comprising a knot forming mechanism consisting of a yarn holding member oscillatably mounted on a suitable partof the apparatus and having an aperture for the yarn'to project througl1;,a finger fixed to a suitable part ofthe mechanism and engaging a groove in the said member; means for enabling the said member to yield away from the finger in the direction of its axis of reciprocation; a yarn attaching needle reciprocatorily mounted on a suitable part of the apparatus to move beneath the said member and across the reciprocatoryraxis thereof; and a gripper jaw oscillatably mounted on the said needle to grip the yarn brought to lie crosswise of the needle by the co-operative actionof the'member and the finger on the yarn projecting through the aperture' 1 .4. In apparatus for making yarn rugs and such like provided with a reciprocatory attaching needle having an oscillatable gripper jaw and with plunger mechanism for looping the yarn, a reciprocatory and longitudinally displaceable member mounted on the apparatus and a relatively fixed finger mounted on the apparatus to co-operate with the said member; diametrically arranged notches in the said member adapted in one position of the member to lie above the path of the needle and a slot in the underside of the said member extending into one of the notches and adapted in one position of the member to lie above the path of the needle, both the notches and the slot serving to facilitate engagement of the attaching needle with the yarn.

' 5. In apparatus for making yarn rugs and V such like provided with an attaching needle having an oscillatable gripper'jaw and with plunger mechanism for looping the yarn, the

combination of an oscillatable inclined spindle mounted on the apparatus in a yieldingly slidable manner above the path of the attaching needle; a pinion wheel provided on the spindle; a rack slidably mounted on the apparatus and meshing with the said pinion; rotated positive cam means mounted on the apparatus and operatively connected to the rack; a plate attached to the said spindle to oscillate in the path of the attaching needle; a vertical hole in the said plate to receive the plunger of the plunger mechanism; and a finger fixed to the apparatus and having the said plate yieldingly bearing against its end.

6. In apparatus for ii'iaking yarn rugs and such like provided with an attachii'ig needle mechanism having an oscillatable gripper jaw and with plunger mechanism for looping the yarn and with measuring means for measuring a length of yarn and with cutting means forsevering the said lengtln an open ating member on the apparatus which operates both the measuring means and the cutting means jointly hut independently of the other moving mechanisms of the apparatus.

7. In apparatus for making yarn rugs and such like provided with an attaching needle mechanism having an oscillatahle gripper jaw and with plunger mechanisni for looping the yarn and with measuring means for measuring a length of yarn and with cutting means tor severing the said length, a rotated shaftprovided on the apparatus; a positive cam mounted on the said apparatus; a lever oscillatahly numnted on the apparatus and operatively connected to the can! and to the measuring means and cuttingmeans.

8. In apparatus tor making yarn rugs and such like wherein an intermittently displaced rarriage is provided with attaching needle mechanism, yarn measuring mechanism, yarn cutting mechanism, and yarn knotting mechanism, the comhination with the carriage of positively actuated positioning means provided onthe carriage and of rack means which is stationary relatively to the movement of the carriage and which coperates with the positioning means to prevent over-running of the carriage during every displacement.

5 In. apparatus for making yarn rugs and such like, wherein an intermittently displaced carriage carries yarn measuring, yarn sewering, yarn attaching and yarn knotting mechanisms, the combination with the carriage oi? two plungels mounted on the carriage; two oppositely directed rows of ratchet rack teeth provided on the apparatus to remain stationary relative to the direction of displacement of the carriage; spring means acting on the plungers to yieldingly retain them out oi? engagement with the said teeth; and reeiprocated cam surfaces provided on the carriage and acting in one direetii'm on the said plungers to force them into eng- 'ement with the ratchet teeth.

in t cs ,imony whereof, we have signed our names to this specification at l\lanchester,.in

the county of Lancaster, England, this 4th day of August, 1925.

lVILLIAlVI FELTON. CHARLES VVILLBER. 

